One consequence of this battle of Kilmainham was, that while Art McMurrogh lived, no further attacks were made upon his kindred or country. He died at Ross, on the first day of January, 1417, in the 60th year of his age. His Brehon, O'Doran, having also died suddenly on the same day, it was supposed they were both poisoned by a drink prepared for them by a woman of the town. "He was," say our impartial _Four Masters_, who seldom speak so warmly of any Leinster Prince, "a man distinguished for his hospitality, knowledge, and feats of arms; a man full of prosperity and royalty; a founder of churches and monasteries by his bounty and contributions," and one who had defended his Province from the age of sixteen to sixty. On his recovery from the effects of his wound, the Duke of Lancaster returned finally to England, appointing Prior Butler his Deputy, who filled that office for five consecutive years. Butler was an illegitimate son of the late Earl of Ormond, and naturally a Lancasterian: among the Irish he was called Thomas _Baccagh_, on account of his lameness. He at once abandoned South Leinster as a field of operations, and directed all his efforts to maintain the Pale in Kildare, Meath, and Louth. His chief antagonist in this line of action was Murrogh or Maurice O'Conor, of Offally. This powerful chief had lost two or three sons, but had gamed as many battles over former deputies. He was invariably aided by his connexions and neighbours, the MacGeoghegans of West-Heath. Conjointly they captured the castles and plundered the towns of their enemies, holding their prisoners to ransom or carrying off their flocks. In 1411 O'Conor held to ransom the English Sheriff of Meath, and somewhat later defeated Prior Butler in a pitched battle. His greatest victory was the battle of Killucan, fought on the 10th day of May, 1414. In this engagement MacGeoghegan was, as usual, his comrade. All the power of the English Pale was arrayed against them. Sir Thomas Mereward, Baron of Screen, "and a great many officers and common soldiers were slain," and among the prisoners were Christopher Fleming, son of the Baron of Slane, for whom a ransom of 1,400 marks was paid, and the ubiquitous Sir Jenico d'Artois, who, with some others, paid "twelve hundred marks, beside a reward and fine for intercession." A Parliament which sat at Dublin for thirteen weeks, in 1413, and a foray into Wicklow, complete the notable acts of Thomas _Baccagh's_ viceroyalty. Soon after the accession of Henry V. (1413), he was summoned to accompany that warlike monarch into France, and for a short interval the government was exercised by Sir John Stanley, who died shortly after his arrival, and by the Archbishop of Dublin, as Commissioner. On the eve of St. Martin's Day, 1414, Sir John Talbot, afterwards so celebrated as first Earl of Shrewsbury, landed at Dalkey, with the title of Lord Lieutenant.